Knitting-machine.



T. BRANSON.

KNITTING MACHINE.

APPLIOATION FILED JAN. 31, 1914.

1, 1 1 5,650. Patented Nov. 3, 1914. FIG I.

Iirma Thomas firm/501g THE NORRIS PETERS C0,. PHOIU-Lunw, WASHIfvunnV, D. C.

"UNITED STATES PATENT OFFICE.

THOMAS BRANSON, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO SIBSON &

STERN, ING., OF GERMANTOWN, PENNSYLVANIA, A CORPORATION OF PENN- SYLVANIA.

KNITTING-MACHINE.

Specification of Letters Patent.

Patented Nov. 3, 1914.

Application filed January 31, 1914. Serial No. 815,664.

may be varied and may also be shiftedrelaj more fully described.

tive to the knitting needles.

A further object of the invention is to provide devices for operating the yarn guides whereby a period of dwell may be given to said yarn guides and this period of dwell varied as desired.

These and other objects will in part beobvious, and will in part be hereinafter guides, and the link is in turn connected to an The connection between oscillatingmember. the link and the oscillating member is of such character that the link may be adjusted relative to the oscillating member for varying the period of dwell given to the yarn guides.

The link is also adjustably connected to the crank arm so that the throw of the yarn guides may be varied. The link is, furthermore, made in sections so that it may be adjusted as to length and thereby vary the operating position of the yarn guides;

Referringmore in detail to the drawings, the knitting machine embodying the invention consists of a suitable frame 3, which is provided with guides 4c. Rods 5, reciprovcate in the guides and carry the needle bar 6. This needle bar is actuated through the medium of a lever 7, fulcrumed to the frame at 8, and having a pitman connection 9, with one ,of the reciprocatory rods 5. The pitman is connected to the lever 7, by pivot 10, which is adjustable in a longitudinal slot 11, formed in said lever. The free end of the lever is in the form of a yoke 12, having a roller 13, engaged by a suitable cam 14:,

which is mounted on a countershaft 15.

This countershaft is driven from a power shaft 16, through the medium of intermeshing gears 17, 18, and 19. The above mechanism for supporting and operating the needles is of the usual construction and forms no part of the present invention.

A swinging cradle 20, provided with the usual yarn guides 21, issuspended from an oscillatory shaft 22, journaled on top of the frame 3, and to this shaft isconnected an oscillatory member in the form of a crank arm 24, that depends from the shaft and swings in a substantially horizontal direction. It is provided in its lower end portion with a longitudinal slot 25. Suitably journaled on the frame 3, at one side of the crank arm 24, is another oscillatory member 26, preferably in the form of a disk, mounted for limited oscillation. The disk 26, is

provided with a slot 27, which is formed SGCtlOIlS '29, and 30, that are overlapped, one

being provided withv a slot 31, through which is passed a clamping bolt 32, threaded into-the other section. The two sections have inwardly extending ears 33, connected by an adjusting screw 34. Their outer ends are provided with eyes 35, through which are passed pivot bolts 36, adjustably mounted respectively in the slots 25, and 27.

The gear wheel 19, has a hub portion 37,

provided in its outer face with a groove-38,

that intersects the axis of rotation of the said gear wheel, and in this groove'is slidably mounted a crank arm 39, carrying a wrist pin i0, that is thus adjustable toward and from the axis of rotation of the wheel. The arm 39, and consequently the wrist pin 40, are held in any desired adjusted relation by means of a suitable bolt &1. A pitman 42, connects the wrist pin 40, with a wrist pin 43, mounted on the oscillatory member 26, on the side opposite to the slot 27.

In the operation of the knitting machine, the cradle 20, is rocked or oscillated back and forth through the link connection 28, to the disk 26, which it turn is oscillated by the wrist pin 40, on the countershaft 15. The slot 27, is so positioned relative to the center of the oscillating disk 26, that the pivot bolt 36, moves toward and from a line passing through the center of the disk and the pivotal connection between the link 28, and the crank arm 24. When this pivot bolt 36, is crossing this line a dwell will be given to the movements of the crank arm 24. As the pivot bolt 36, moves away from this line the movement imparted to the crank arm 24L, increases. This movement is of a well known character and further description thereof is not thought necessary. An adjustment of this bolt 36, in the slot 27 will vary the dwell. The adjustment of the pivotal connection between the link 28, and the crank arm 24, will increase or decrease the throw of the yarn guides. When the pivotal connection is moved away from the shaft 22, the movement imparted to the yarn guides will be less, and when said pivotal connection is moved toward the shaft, then the movement imparted to the yarn guides will be greater. By adjusting the length of the link 28, the operating position of the yarn guides may be varied.

From the above construction, it will be apparent that means has been provided for varying the throw of the yarn guides, for changing the operating position of the yarn guides, and for changing the character of motion imparted to the yarn guides, that is to say, the period of dwell given to the yarn guides. These adjustments in the mechanism for operating the yarn guides provides a driving mechanism that can be operated at a relatively high rate of'speed, in order to secure a relatively great output. By this driving mechanism, constructed as above stated, practically any desired pause or dwell can be obtained in the controlling movements of the yarn guides, thereby eliminating any danger of shearing the yarn, dropping stitches, or otherwise making imperfect work, and insuring a proper operation of the yarn guides which will produce designs or eifects in certain classes of fabric that heretofore have been impracticable to obtain without reducing the speed and consequently the output of the machine.

It is obvious that minor changes in the details of construction may be made without departing from the spirit of the invention as set forth in the appended claims.

Having thus described my invention, I claim:

1. A knitting machine comprising in combination, needles, yarn guides, and means for operating said yarn guides including a depending arm connected to the yarn guides, an oscillating member mounted on the frame, means for oscillating said member, and a link for connecting said oscillating member to said depending arm, the connection between said link and said oscillating member lying in a line passing through the fulcrum of the oscillating member and sub stantially at right angles to said depending arm when said depending arm is at its extreme throwaway from said oscillating member.

2. A knitting machine comprising in combination, needles, yarn guides, and means for operating said yarn guides including a depending arm connected to the yarn guides,

an oscillating member mounted on the frame, means for oscillating said member, a link for connecting said oscillating member to said depending arm, the connection between said link and said oscillating member lying in a linepassing through the fulcrum of the oscillating member and substantially at right angles to said depending arm when said depending arm is at its extreme throw away from said oscillating member, said pivotal connection between the link and said oscillating-member being adjustable in a direction substantially trans verse of said line.

3. A knitting machine comprising in combination, needles, yarn guides, and means for operating said yarn guides including a depending arm connected to the yarn guides, an oscillating member mounted on the frame, means for oscillating said member, a link for connecting said oscillating member to said depending arm, the connection between said link and said oscillating member lying in a line passing through the fulcrum of the oscillating member and substantially at right angles to said depending arm when said depending arm is at its extreme throw away from said oscillating member, said connection between the link and the depending arm being adjustable lengthwise of the arm.

4. A knitting machine comprising in combination, needles, yarn guides, and means for operating said yarn guides including a depending arm connected to the yarn guides, an oscillating member mounted on the frame, means for oscillating said member, a link for connecting said oscillating member to said depending arm, the connection between said link and said oscillating member lying in a line passing through the fulcrum of the oscillating member and substantially at right angles to said depending arm when said depending arm is at its extreme throw away from said oscillating member, said pivotal connection between the link and said oscillating member being adjustable in a direction substantially transverse of said line, and said connection between the link and the depending arm being adjustable lengthwise of said arm.

5. A knitting machine comprising in combination, needles, yarn guides, and means for operating said yarn guides including a depending arm connected to the yarn guides, an oscillating member mounted on the frame, means for oscillating said member, a link for connecting said oscillating membeer to said depending arm, the connection between said link and said oscillating member lying in a line passing through the fulcrum of the oscillating member and, substantially at right angles to said depending arm when said depending arm is at its extreme throw away from said oscillating member, said pivotal connection between the link and said oscillating member being adjustable in a direction substantially transverse of said line, said connection between the link and the depending arm being adjustable lengthwise of said arm, and means whereby said link may be lengthened or shortened.

6. A, knitting machine including in combination needles, yarn guides, and means for operating said yarn guides comprising a rotatable driving member, of a wrist pin mounted thereon and adjustable toward and. from its. axis of rotation, an oscillatory disk having a slot in one side, a pitman connect ing the wrist pin and the disk, a swinging cradle having yarn guides, a crank arm connected to the yarn guides and movable toward and from the disk, said crank arm having a slot substantially parallel to the slot of the disk, an extensible link, and piv ots connected to the link and adjustably mounted in said slots.

In testimony whereof, I have hereunto;

signed my name, at Philadelphia, Pennsylvania, this twenty-eighth day of January,

)opies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. C. 

